The serial number contains the age of the equipment.Example,if it reads something like 5894D11238 the numbers 94 designate it was made in 1994.Look for numbers that would be close to what you expect the age is and if it has numbers close to what you could expect it to be, it probably is that number.The model # will tell you its capacity. An 024 in its # means 2 ton-24,000 btu's,030 is 2 1/2 ton-30,000,036 is 3ton 36,000,042 3 1/2 42,000,048 4ton 48,000.SEER ratings are not written on the equipment.Age can give you a good idea of how efficient it might be.10 SEER units were discontinued I would guess about 5 yrs. ago yet not that long before were considered high efficient.

Your Answer

furnacecompare.com is provided "as is" and without warranty of any kind,
either express or implied, including, but not limited to, the implied warranties
of merchantability, fitness for a particular purpose, or non-infringement.